The filming composition comprises an acrylic polymer dissolved in a solvent mixture of one or more high-volatility solvents combined with one or more low-volatility solvents.

• 成膜组合物包含溶于一种或多种高挥发性溶剂与一种或多种低挥发性溶剂组合的溶剂混合物中的丙烯酸类聚合物。